Common Lisp中是否存在运行外部程序的标准方法？ [英] Does there exist standard way to run external program in Common Lisp?

问题描述

在剪辑中，以下代码有效：

In clisp, the following code works:

(defun hit-history () (shell "tail ssqHitNum.txt"))

但是，在Clozure CL中，外壳函数！

However, in Clozure CL, the shell function is not supported!

推荐答案

不，没有标准方法，但是有一些库可以为重要的实现。例如，在 Quicklisp 中有一个普通的shell，它提供了 shell-command 。 （我实际上没有对其进行测试，但是它是推荐库在 CLiki 。）还有外部程序。更新：Ehvince指出，最近似乎更喜欢下壳

No, there is no standard way, but there are libraries which provide this functionality for the important implementations. For example, there's trivial-shell available in Quicklisp, which provides shell-command. (I didn't actually test it, but its among the recommended libraries on CLiki.) There is also external-program. Update: inferior-shell seems to be prefered these days, as Ehvince points out in a comment and his own answer.

您还可以使用读取条件，使不同的实现使用各自的功能来实现此目的。

You could also use read-time conditionals to make different implementations use their respective functionality to do this.

CCL具有 ccl：run-program ，例如：

CL-USER> (run-program "whoami" '() :output *standard-output*)
foobar
#<EXTERNAL-PROCESS (whoami)[NIL] (EXITED : 0) #xC695EA6>

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